Claude on Windows massively consumes RAM without any way to stop it
A hidden bug with Claude's 1.8GB Hyper-V has angered Windows users: some are even abandoning the Anthropic AI tool due to uncontrolled memory consumption.
A hidden bug with Claude's 1.8GB Hyper-V has angered Windows users: some are even abandoning the Anthropic AI tool due to uncontrolled memory consumption.
On GitHub, the Claude Code repository has once again raised a fuss about a problem that was noticed back in February. It turns out that the desktop version of Claude for Windows deploys a 1.8 GB Hyper-V virtual machine if you have used Claude Cowork or agent mode at least once. The worst thing is that this happens every time you start Claude Code — even if the AI is needed just as a regular chat, writes Neowin.
Many users have supported this ticket and reported that they are experiencing the same issue on their devices. However, the issue seems to only affect the desktop version of Claude for Windows and does not affect CLI users or other platforms. After activating the bug, a Vmmem process appears in Task Manager, showing 0% CPU usage but consuming approximately 1.8 GB of RAM.
Claude users emphasize that this process should only be triggered when they explicitly enable agent mode or Cowork, and that session files should be effectively deleted when they are finished. They also urge developers to optimize Claude so that the application works correctly without a virtual machine infrastructure and does not harm chat performance.
It's unclear when exactly this issue started or what caused it. It's also unclear whether Anthropic is even going to investigate it, especially considering that it's been reported for months. In the meantime, the bug is quite annoying for users, with many saying that it's forced them to uninstall Claude Code from their computers, as there's no effective workaround yet.
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